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Abstract Background Commercial cultivars of perennial ryegrass infected with selected Epichloë fungal endophytes are highly desirable in certain pastures as the resulting mutualistic association has the capacity to confer agronomic benefits (such as invertebrate pest deterrence) largely due to fungal produced secondary metabolites (e.g., alkaloids). In this study, we investigated T2 segregating populations derived from two independent transformation events expressing diacylglycerol acyltransferase (DGAT) and cysteine oleosin (CO) genes designed to increase foliar lipid and biomass accumulation. These populations were either infected with Epichloë festucae var. lolii strain AR1 or Epichloë sp. LpTG-3 strain AR37 to examine relationships between the introduced trait and the endophytic association. Here we report on experiments designed to investigate if expression of the DGAT + CO trait in foliar tissues of perennial ryegrass could negatively impact the grass-endophyte association and vice versa. Both endophyte and plant characters were measured under controlled environment and field conditions. Results Expected relative increases in total fatty acids of 17–58% accrued as a result of DGAT + CO expression with no significant difference between the endophyte-infected and non-infected progeny. Hyphal growth in association with DGAT + CO expression appeared normal when compared to control plants in a growth chamber. There was no significant difference in mycelial biomass for both strains AR1 and AR37, however, Epichloë-derived alkaloid concentrations were significantly lower on some occasions in the DGAT + CO plants compared to the corresponding null-segregant progenies, although these remained within the reported range for bioactivity. Conclusions These results suggest that the mutualistic association formed between perennial ryegrass and selected Epichloë strains does not influence expression of the host DGAT + CO technology, but that endophyte performance may be reduced under some circumstances. Further investigation will now be required to determine the preferred genetic backgrounds for introgression of the DGAT + CO trait in combination with selected endophyte strains, as grass host genetics is a major determinant to the success of the grass-endophyte association in this species.

Under favourable conditions, perennial ryegrass (Lolium perenne) engineered to accumulated high lipid (HL) carbon sink in their leaves was previously shown to also enhance photosynthesis and growth. The greater aboveground biomass was found to be diminished in a dense canopy compared to spaced pots. Besides, the underlying genetic regulatory network linking between leaf lipid sinks and these physiological changes remains unknown. In this study, we demonstrated that the growth advantage was not displayed in HL Lolium grown in spaced pots under low lights. Under standard lights, analysis of differentiating transcripts in HL Lolium reveals that the plants had elevated transcripts involved in lipid metabolism, light capturing, photosynthesis, and sugar signalling while reduced expression of genes participating in sugar biosynthesis and transportation. The plants also had altered several transcripts involved in mitochondrial oxidative respiration and redox potential. Many of the above upregulated or downregulated transcript levels were found to be complemented by growing the plants under low light. Overall, this study emphasizes the importance of carbon and energy homeostatic regulatory mechanisms to overall productivity of the HL Lolium through photosynthesis, most of which are significantly impacted by low irradiances.

Diacylglycerol acyl-transferase (DGAT) and cysteine oleosin (CO) expression confers a novel carbon sink (of encapsulated lipid droplets) in leaves of Lolium perenne and has been shown to increase photosynthesis and biomass. However, the physiological mechanism by which DGAT + CO increases photosynthesis remains unresolved. To evaluate the relationship between sink strength and photosynthesis, we examined fatty acids (FA), water-soluble carbohydrates (WSC), gas exchange parameters and leaf nitrogen for multiple DGAT + CO lines varying in transgene accumulation. To identify the physiological traits which deliver increased photosynthesis, we assessed two important determinants of photosynthetic efficiency, CO2 conductance from atmosphere to chloroplast, and nitrogen partitioning between different photosynthetic and non-photosynthetic pools. We found that DGAT + CO accumulation increased FA at the expense of WSC in leaves of L. perenne and for those lines with a significant reduction in WSC, we also observed an increase in photosynthesis and photosynthetic nitrogen use efficiency. DGAT + CO L. perenne displayed no change in rubisco content or Vcmax but did exhibit a significant increase in specific leaf area (SLA), stomatal and mesophyll conductance, and leaf nitrogen allocated to photosynthetic electron transport. Collectively, we showed that increased carbon demand via DGAT+CO lipid sink accumulation can induce leaf-level changes in L. perenne which deliver increased rates of photosynthesis and growth. Carbon sinks engineered within photosynthetic cells provide a promising new strategy for increasing photosynthesis and crop productivity.

Reading engagement is like a puzzle consisting of many pieces to emplace for successful engagement to occur. The author, a French Immersion teacher/researcher, found that many of her grade one reluctant readersthose students who could read but chose not toapproached reading with some pieces of the puzzle. They had strategies and knowledge but lacked motivation to engage in reading. This led to the question: How do reluctant readers in my classroom respond to practices designed to increase their motivation to read? This study is qualitative-oriented action research. The author fulfilled the dual role of teacher and researcher as she introduced and taught seven classroom practices to see which ones helped the reluctant readers to increase their motivation to read. By applying multiple data collection methods the teacher/researcher set out to record what reluctant readers had to say about each of the classroom practices.

Introduction: Traditional face-to-face family member visits in the intensive care unit (ICU) are challenged during the coronavirus disease pandemic with time-critical visiting of the ICU patient being impossible. Objective: This study aimed to explore reported experiences and satisfaction surrounding the use of technology for virtual visits and virtual family meetings in the ICU setting. Two groups were surveyed: (1) family members of critically ill patients in the ICU and (2) health care workers caring for these patients. Design: The study, conducted in the 36-bed ICU of a speciality metropolitan acute care facility in Australia, used a pragmatic post-test survey design. Data were analyzed descriptively. Results: Of health care worker subjects, 106 completed the survey and the majority of communication episodes favored virtual visits (79.2%, n = 84). Of family member subjects, 69 completed the survey, with the majority participating in virtual family meetings (40.6%, n = 28). Both groups indicated satisfaction with virtual communication. Conclusions: We found virtual communication was positively received. [ABSTRACT FROM AUTHOR]

Objective: Interventions to increase physical activity (PA) in cancer survivors have often adopted a "one‐size‐fits‐all" approach and may benefit from being tailored to psychological constructs associated with behavior. The study objective was to investigate the exercise preferences and psychological constructs related to PA among cancer survivors. Methods: Posttreatment colorectal, endometrial, and breast cancer survivors (n = 183) living in metropolitan and nonmetropolitan areas completed survey measures of PA, exercise preferences, attitudes, self‐efficacy, perceived behavioral control (PBC), and intention toward PA. Results: A structural equation model with adequate fit and quality indices revealed that instrumental attitude and self‐efficacy were related to PA intention. Intention was related to behavior and mediated the relationship between self‐efficacy and behavior. Preferred exercise intensity was related to self‐efficacy, PBC, attitudes, and intention, while preferred exercise company was related to self‐efficacy and PBC. Participants preferred moderate‐intensity PA (71%), specifically self‐paced (52%) walking (65%) in an outdoor environment (58%). Conclusions: Since instrumental attitude and self‐efficacy were associated with PA, incorporating persuasive communications targeting attitudes in PA interventions may promote PA participation. As cancer survivors who prefer low‐intensity exercise and exercising with others report lower self‐efficacy and PBC, interventions targeting confidence and successful experience in this group may also be warranted. [ABSTRACT FROM AUTHOR]

Introduction: Traditional face-to-face family member visits in the intensive care unit (ICU) are challenged during the coronavirus disease pandemic with time-critical visiting of the ICU patient being impossible. Objective: This study aimed to explore reported experiences and satisfaction surrounding the use of technology for virtual visits and virtual family meetings in the ICU setting. Two groups were surveyed: (1) family members of critically ill patients in the ICU and (2) health care workers caring for these patients. Design: The study, conducted in the 36-bed ICU of a speciality metropolitan acute care facility in Australia, used a pragmatic post-test survey design. Data were analyzed descriptively. Results: Of health care worker subjects, 106 completed the survey and the majority of communication episodes favored virtual visits (79.2%, n  = 84). Of family member subjects, 69 completed the survey, with the majority participating in virtual family meetings (40.6%, n  = 28). Both groups indicated satisfaction with virtual communication. Conclusions: We found virtual communication was positively received.